On 4/26/23 10:46, gene heskett wrote:
On 4/24/23 17:54, gene heskett wrote:
On 4/23/23 09:13, gene heskett wrote:
Petter;
Dummy questions:
No comment on my tirade, so I guess I see about doing something in
pyvcp, but then one question remains. How do I decide what tune-mode to
use. Is there a rule of thumb for that? This machine currently has 5
pid's, 4 for axises, 1 for spindle speed. Please advise.
Thanks.
Cheers, Gene Heskett.
I found a slightly different wording about it on the linuxcnc.org web
site, but must have been an older version, so I pasted the last 3
paragraphs of the manpage into geany and reformatted it into a step by
step, And found the tune-effort default of 0.5, actually needed
multiplied by several million before I started getting 1/2" jiggles out
of an axis. Then the answers it gave were also 6 to 9 digits left of
the decimal point. But, those answers, copied into the .ini file worked
well except for a fraction of a thou of nervousness, visible in the
dro's last digit or 2.
Time for a wider deadband?
I was not able to get a full degree of jiggle out of my A (angular)
drive but that motor can reach its speed limit in 1/4 degree, its own
worm drive is about 50 times more geardown than actually needed.
Cheers, Gene Heskett.
--
"There are four boxes to be used in defense of liberty:
soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author, 1940)
If we desire respect for the law, we must first make the law respectable.
- Louis D. Brandeis
Genes Web page <http://geneslinuxbox.net:6309/>
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